<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        ul {
            /* 开启父容器ul的弹性盒子布局 */
            display: flex;

            /* display: inline-flex; */

            /* 改变主轴方向 */
            /* 默认值：row */
            /* 纵向排列column */
            /* flex-direction: column; */

            /* flex-direction: row-reverse; */
            flex-direction: column-reverse;


            border: 2px solid orange;
        }
        
        li {
            width: 100px;
            height: 50px;
            border: 1px solid darkblue;
            background-color: lightblue;
        }
    </style>
</head>
<body>
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
        <li>5</li>
    </ul>
   
</body>
</html>